Admit what you didn't understand.

The GF film had to deal with a lot of complex interwoven storys, characters, etc. I guess I'm not the only one who didn't understand some major facts when watching it the first time:
- Who is Barzini? Who is Tattaglia? What do they want?
- I didn't recognize the baker at the hospital, even though he said it.
- The time gaps:
* Luca in Vito’s office/ “Have yourself a merry christmas”
* After Michael’s return everything seems to happen so quickly.
* In fact FCC uses only once an old fashioned way of telling us that time is passing: In the middle of the film when he shows the newspaper headlines
- The Paulie/Rocco thing.
- I couldn’t tell that the new guy (Neri) at the meeting of Michael, Vito, Tom, Tessio, Clemenza is the same guy who kills Barzini. In fact I didn't really understand this before I read the book and saw GF2.
- What kind of apartment is Sonny in when Clemenza is knocking on his door?
- Are the Corleones in fact a criminal organisation? (just kidding )

(This thread is only about GF, because I think the problems part 2 gives to first time watchers are of a different kind.)